Can anyone explain how the Chicago city morgue works? The size, staff, procedures?

For example, do they actually conduct full scale autopsies on each person killed so that the police have evidence to try to

catch the murdered? Or do they just skip the legal work because the cops don't even try. And who makes that decision? With all these bodies coming in, how are they released and distributed out. Obviously a funeral home may call for a certain body for a funeral, but probably for more than half of all the bodies, there is no call. Do the just box them up and take them to potters field with no name or identification. So how long do they store a body? Anyway, it would seem to be sort of a complicated handling process. May be more complicated than a UPS distribution center.